Wire straightening and tensioning device.



J. PAGLIARUL. WIRE STRAIGHTENING AND TENSIONING DEVICE.

APPLICATION FILED JAN. 10. 1911. r

' Patented Aug. 21,1917.

' JOSEPH PAGLIARUL, or ELGIN, ILLINOIS, ASSIGNOR To JOSEPH E. stains, on CHICAGO, ILLINOIS.

wIItE STRAIGI-ITENING AND TENSIONING DEVICE.

Specification of Letters Patent. Patented Aug. 21, 1917.

Application filed January 10, 1917. SeriaINo. 141,533.

To all whom it may concern: I t

Be it known that I, J osnPH PAGLIARUL, a citizen of the United States, residing in the city of Elgin,'county of Kane, and State of Illinois, haveinvented certain new and use ful Improveme I ts in Wire Straightening and Tensioning Devices, of which the following is a specification. p

My invention relates to wire straightening and tensioning devices, and refers more particularly to such devicesas may be employed in wire stitching machines. 2

vAmong the salient objects of the invention are, to provide an improved straightening andtensioning device in which the straightening and tensioning means are arranged on a common unitary support; to provide im- I proved means for adjusting and securing the various partsin desired position; to provide asinglemeans for straightening the wire so as to curvature in two planes at an angleto each other and, in general, to provide an improvedwire straightening and tensioning device of the character referred to. My invention relates to the matters hereinafter described, and more particularly pointed out in connection with the accompanying drawings, in which Figure 1 is a side elevation of the device in its-angular relation to the wire stitching machine a portion of which is shown for the sake of clearness; j

Fig. 2 is a side elevation similar to Fig. 1, but partly in section; and Fig. 3 is a front elevation. Referring tothe drawings, the device comprises a wire straightening stud 10, the spring-pressed adjustable tension guide 11, and the delivery guide 12,.all.mountedin and carried by a rectangular block 13 secured to the front of the arm 14 projecting from the lower side of the main frame casting (not shown). The delivery guide 12 is a round pin secured in the block 13 rigidly by means of a pin 15 and is provided with a transverse hole 16 in line with the wire, and performs no straightening function. The adjustable tension plunger 11 is formed from a piece of round steel with a reduced neck portion 17 sliding within a cylindrical hole in the block 13, and the lower end of the plunger is still further reduced in diameter to accommodate the coil compression spring 18 which is located in the'cylindrical bore 19 co -axial with=the upper bore and neck 17. The lower end of the plunger is threaded to accommodate an adjusting'nut 20 between which and the end of the spring is interposedawasher 21. The action of the spring which is compressedbetween the washer 21 andthe bottom of the bore 19 is such as to forcethe plunger 11 in a downward direction and clamp the ,wire against the upper face of the block 13, the wire passing through. a transverse. aperture 22 in the plunger located just below the shoulder at the end of the neck 17. j The wire-straightening guide 10 is also formed from a cylindrical piece of steel and is rotatably mounted within the block 13. The lower end of the guide 10 is threaded and is furnished with an adjustingv nut 23, the latter being formed with a collar'24; which engages a notch 25 in the block 13 and enables the plunger 10 to be adjusted up and down longitudinally. The extreme lower end of the guide 10 is also drilled out transversely to accommodate the reduced end of the small arm 26 which is riveted therein, and forms a convenient handle with which to set the guide in its required angular position. The upper end of the plunger 10 is drilled out transversely and the outer mouth of the hole is formed V-shaped, as shown at 27 in order to prevent 'damage to the wire as it enters. In practice the wire is, threaded through trans verse holes in the three members 10, 1 1,

and 12, andif it is found that thewire as It I nthe upper flat surface 29 of the block 13 and the other beveled surface 30. The wire will thus be given a downward bend at that point and after one or two trials and adjustments of the nut 23, the wire can be made to travel out of the final guide 16 so as to lie in an inclined plane precisely in line with the axis of the hole 26. In some cases, however, the wire, although it appears to be straight as viewed from the front of the machine in a horizontal direction, actually may be bowed so as to depart from the desired vertical plane of travel. This may be corrected by swinging the guide 10 bodily by means of the small handle 16 so as to place the hole 27 I guide has been properly adjusted to cause the wire to pass out of the straightener in a sufliciently straight direction, it is locked in place by means of the set screw 31. The frictional drag on the wire as it passes through the wire-straightening device may be lessened or increased by adjusting the nut 20 which causes the end of the plunger 11 to press the wire more or less tightly against the upperface 29 of the top of the block 13. It will be noticed that the hole 22 is relatively long compared with the diameter of the plunger 11 which makes it possible to use the flaring mouth of the hole 22as a means for bending the wire in an upward direction incase the wire is found to curve downwardly as it passes from out the hole 26. This is of course made possible by raising the guide 10 a sufficient distance to bring the hole 27 above the plane of the surface 19 a sufficient distance to cause the wire to bend upwardly as it enters the hole 22 in the spring-pressed plunger 11-.

It will be readily understood by those skilled in this art that the apparatus herein shown and described is capable of variation and modification as to its details of structure and organization to a considerable extent without departing from the principles of operation involved or lessening the efliciency of the apparatus for its described and intended purposes. Hence it is to be understood that the invention is not'limited to the exact constructio-ns and relative arrangements of the cooperating parts otherwise than as clearly pointedout in the appended claims. I claim 1. A wire straightening device, comprising a frame member, a longitudinally adjustable guide member rotatably mounted in said frame member and having a transverse aperture for-the passage of the wire, said frame member havlng guidmg means for said wire'adj acent the aperture in said guide member, and means for fixing the angular and longitudinal position of said guide Copies of this patent may 'be obtained for member with "reference to said frame member and said guiding means.

2. In wire straightening mechanism, the combination of a frame provided with a pair of guides for the wire, one of said guides being bodily adjustable with reference to the other guide member to bend the wire in the direction of said bodily adjustment, and angularly adjustable within said frame to bend the wire in the direction of said angular adjustment. 1

3. In wire straightening and tensioning device, the combination of a frame member provided with means adapted to deliver the wire in a straight line from said frame member, and a guide plunger having a transverse opening of a length greater than the distance across said opening, said guide plunger being bodily "adjustable to bring said opening to one side of said straight line and angularly adjustable to establish an angle between the axis of said opening and position of said plunger in adjusted position. 4. In wire straightening and tensioning device, the combination of a frame member, a spring-pressed non-rotatable guide member carried by said frame member provided with a longitudinal guiding aperture CO. axial with the desired direction of travel of the wire and adapted to press the wire into frictional engagement with said frame memher, and a guiding plunger provided with a transverse wire conduit longitudinally adjustable in said frame member to bring the axes of said conduit and said guiding aperture into different planes, and rotatably mounted in said frame member tocause the axis of said conduit to intersect the plane of the angle of travel of the wire. a

5. In a wire straightening and tensioning device, comprising, a frame, a longitudinally adjustable and rotatively mounted member having a wire passage therein, guiding means adjacent to said passage, and means for securing the movable member with respect to the frame and the guiding means.

JOSEPH PAGLIARUL.

five cents each, by addressing the Commissioner of Patents, Washington, I). 0. 

